Enzyme Regulation: Covalent Modification — Flashcards

Flashcard 1: _____ serves as the allosteric activator of muscle glycogen phosphorylase.

Answer: 5'AMP

Flashcard 2: _____ is an obligate activator of pyruvate carboxylase

Answer: Acetyl-CoA

Flashcard 3: Caspases are cysteine proteases that cleave proteins at the _____ residue

Answer: aspartic acid

Flashcard 4: Enzyme increases the rate of reaction by reducing the _____

Answer: activation energy.

Flashcard 5: The first step in intestinal protein digestion involves activation of _____ (inactive) to trypsin (active)

Answer: trypsinogen

Flashcard 6: The activation of Lysyl hydroxylases _____ healing.

Answer: promotes (delays/promotes)

Flashcard 7: While most enzymatic reactions follow a hyperbolic curve (Michaelis-Menten kinetics), _____ kinetics follow a sigmoidal curve

Answer: allosteric

Flashcard 8: Sigmoid-shaped graph which is a property of _____ enzymes

Answer: multimeric

Flashcard 9: lead inhibits _____ and _____ enzymes

Answer: ALA dehydratase

Extra: 

Flashcard 10: Ethanol may be converted to _____ via the enzyme alcohol dehydrogenase

Answer: acetaldehyde